Attosecond electron–spin dynamics in Xe 4d photoionization
Artikel i vetenskaplig tidskrift, 2020

The photoionization of xenon atoms in the 70–100 eV range reveals several fascinating physical phenomena such as a giant resonance induced by the dynamic rearrangement of the electron cloud after photon absorption, an anomalous branching ratio between intermediate Xe+ states separated by the spin-orbit interaction and multiple Auger decay processes. These phenomena have been studied in the past, using in particular synchrotron radiation, but without access to real-time dynamics. Here, we study the dynamics of Xe 4d photoionization on its natural time scale combining attosecond interferometry and coincidence spectroscopy. A time-frequency analysis of the involved transitions allows us to identify two interfering ionization mechanisms: the broad giant dipole resonance with a fast decay time less than 50 as, and a narrow resonance at threshold induced by spin-flip transitions, with much longer decay times of several hundred as. Our results provide insight into the complex electron-spin dynamics of photo-induced phenomena.

Författare

Shiyang Zhong

Lunds universitet

Jimmy Vinbladh

Stockholms universitet

David Busto

Lunds universitet

Richard J. Squibb

Göteborgs universitet

Marcus Isinger

Lunds universitet

Lana Neoričić

Lunds universitet

Hugo Laurell

Lunds universitet

Robin Weissenbilder

Lunds universitet

Cord L. Arnold

Lunds universitet

Raimund Feifel

Göteborgs universitet

Jan Marcus Dahlström

Lunds universitet

Göran Wendin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantteknologi

Mathieu Gisselbrecht

Lunds universitet

Eva Lindroth

Stockholms universitet

Anne L’Huillier

Lunds universitet

Nature Communications

2041-1723 (ISSN)

Vol. 11 1 5042

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik

DOI

10.1038/s41467-020-18847-1

Mer information

Senast uppdaterat

2020-11-06